US4637040A - Plural source computerized tomography device with improved resolution - Google Patents
Plural source computerized tomography device with improved resolution Download PDFInfo
- Publication number
- US4637040A US4637040A US06/818,892 US81889286A US4637040A US 4637040 A US4637040 A US 4637040A US 81889286 A US81889286 A US 81889286A US 4637040 A US4637040 A US 4637040A
- Authority
- US
- United States
- Prior art keywords
- radiation
- source
- detector
- gantry
- center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4021—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
- A61B6/4028—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot resulting in acquisition of views from substantially different positions, e.g. EBCT
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
- H01J35/153—Spot position control
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/30—Controlling
- H05G1/52—Target size or shape; Direction of electron beam, e.g. in tubes with one anode and more than one cathode
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/70—Circuit arrangements for X-ray tubes with more than one anode; Circuit arrangements for apparatus comprising more than one X ray tube or more than one cathode
Abstract
Description
Δ.sub.s =R.sub.s /R.sub.d ×P(N+1/n)
Δ.sub.s =R.sub.s /R.sub.d ×P(N+1/2)
Claims (34)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/818,892 US4637040A (en) | 1983-07-28 | 1986-01-14 | Plural source computerized tomography device with improved resolution |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US51812183A | 1983-07-28 | 1983-07-28 | |
US06/818,892 US4637040A (en) | 1983-07-28 | 1986-01-14 | Plural source computerized tomography device with improved resolution |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US51812183A Continuation | 1983-07-28 | 1983-07-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
US4637040A true US4637040A (en) | 1987-01-13 |
Family
ID=27059351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/818,892 Expired - Lifetime US4637040A (en) | 1983-07-28 | 1986-01-14 | Plural source computerized tomography device with improved resolution |
Country Status (1)
Country | Link |
---|---|
US (1) | US4637040A (en) |
Cited By (69)
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---|---|---|---|---|
US4841553A (en) * | 1985-09-30 | 1989-06-20 | Yokogawa Medical Systems, Limited | Method of and apparatus for carrying out tomography |
US4894778A (en) * | 1988-09-16 | 1990-01-16 | Yokogawa Medical Systems, Limited | X-ray computerized tomographic device |
DE3913302A1 (en) * | 1988-07-20 | 1990-01-25 | Mitsubishi Electric Corp | COMPUTER TOMOGRAPHY SYSTEM |
US4991190A (en) * | 1988-08-15 | 1991-02-05 | Kabushiki Kaisha Toshiba | Rotate-rotate type X-ray computerized tomographic imaging apparatus |
GB2242106A (en) * | 1990-03-14 | 1991-09-18 | Hitachi Ltd | Apparatus for computerized tomography |
US5173852A (en) * | 1990-06-20 | 1992-12-22 | General Electric Company | Computed tomography system with translatable focal spot |
DE4124294A1 (en) * | 1991-07-22 | 1993-01-28 | Siemens Ag | X-RAY TUBES FOR COMPUTER TOMOGRAPHY |
EP0543626A1 (en) * | 1991-11-20 | 1993-05-26 | General Electric Company | Deconvolution filter for CT system |
DE4140631C1 (en) * | 1991-12-10 | 1993-08-05 | Frank Prof. Dr. 4400 Muenster De Natterer | Computer tomograph system - rotates source around circular track around body and swings source so that beam is sent out at different distances to the body centre |
EP0569238A1 (en) * | 1992-05-08 | 1993-11-10 | General Electric Company | Image reconstruction technique for a computed tomography system |
US5335255A (en) * | 1992-03-24 | 1994-08-02 | Seppi Edward J | X-ray scanner with a source emitting plurality of fan beams |
US5493593A (en) * | 1994-09-27 | 1996-02-20 | University Of Delaware | Tilted detector microscopy in computerized tomography |
US5550889A (en) * | 1994-11-28 | 1996-08-27 | General Electric | Alignment of an x-ray tube focal spot using a deflection coil |
US5848117A (en) * | 1996-11-27 | 1998-12-08 | Analogic Corporation | Apparatus and method for computed tomography scanning using halfscan reconstruction with asymmetric detector system |
DE19851556C2 (en) * | 1998-11-09 | 2000-11-23 | Siemens Ag | CT machine |
DE19953613A1 (en) * | 1999-11-08 | 2001-05-17 | Siemens Ag | Computer tomography apparatus |
US6252935B1 (en) | 1998-07-22 | 2001-06-26 | Siemens Aktiengesellschaft | X-ray radiator with control of the position of the electron beam focal spot on the anode |
WO2001060258A1 (en) | 2000-02-15 | 2001-08-23 | Philips Medical Systems Technologies Ltd. | Clinical screening ct systems |
WO2002026134A1 (en) | 2000-09-28 | 2002-04-04 | Philips Medical Systems Technologies Ltd. | Ct scanner for time-coherent large coverage |
US6384416B1 (en) | 1998-04-27 | 2002-05-07 | Duke University | Transmission scanning technique for gamma-camera coincidence imaging |
EP1211917A1 (en) * | 2000-12-01 | 2002-06-05 | Marconi Medical Systems, Inc. | Imaging apparatus and method |
US6473487B1 (en) | 2000-12-27 | 2002-10-29 | Rapiscan Security Products, Inc. | Method and apparatus for physical characteristics discrimination of objects using a limited view three dimensional reconstruction |
US6480572B2 (en) | 2001-03-09 | 2002-11-12 | Koninklijke Philips Electronics N.V. | Dual filament, electrostatically controlled focal spot for x-ray tubes |
US20030123604A1 (en) * | 2001-12-28 | 2003-07-03 | Edic Peter Michael | Methods and apparatus for computed tomography imaging |
WO2003094115A1 (en) | 2002-05-06 | 2003-11-13 | Koninklijke Philips Electronics N.V. | High resolution ct scanner |
US20040037393A1 (en) * | 2002-08-20 | 2004-02-26 | General Electric Company | Multiple focal spot X-ray inspection system |
EP1501052A1 (en) * | 2003-07-24 | 2005-01-26 | Kabushiki Kaisha Toshiba | Backprojection reconstruction method for CT with a displaced center-of-rotation |
US20050100132A1 (en) * | 2003-11-07 | 2005-05-12 | Block Wayne F. | Multiple target anode assembly and system of operation |
US20050190878A1 (en) * | 2004-02-27 | 2005-09-01 | Bruno De Man | Method and system for imaging using multiple offset X-ray emission points |
US20050232390A1 (en) * | 2004-04-08 | 2005-10-20 | Herbert Bruder | Computed tomography unit having an aperture stop |
US7062006B1 (en) * | 2005-01-19 | 2006-06-13 | The Board Of Trustees Of The Leland Stanford Junior University | Computed tomography with increased field of view |
US20060215890A1 (en) * | 2005-03-22 | 2006-09-28 | General Electric Company | Method and system for diagnosing an imaging system |
US20060214108A1 (en) * | 1999-06-06 | 2006-09-28 | Elgems Ltd. | Gamma Camera and CT System |
US20060227936A1 (en) * | 2005-01-18 | 2006-10-12 | Zegang Dong | Stereo x-ray system with two grid-controlled x-ray tubes |
US20060239396A1 (en) * | 2005-03-30 | 2006-10-26 | Herbert Bruder | Method and tomography apparatus for fast volume scanning of an examination region |
US20060256913A1 (en) * | 2005-05-12 | 2006-11-16 | Bio-Imaging Research, Inc. | Method and apparatus to facilitate computerized tomography of relatively large objects |
US20070223653A1 (en) * | 2006-03-21 | 2007-09-27 | Xcounter Ab | Dual-source scanning-based detection of ionizing radiation |
WO2007066243A3 (en) * | 2005-12-08 | 2008-01-03 | Koninkl Philips Electronics Nv | Systems and methods for scanning and data acquisition in computed tomography (ct) applications |
US20080031419A1 (en) * | 2006-08-04 | 2008-02-07 | General Electric Company | X-ray source focal spot deflection methods and apparatus |
US20080095299A1 (en) * | 2004-03-17 | 2008-04-24 | Koninklijke Philips Electronics N.V. | Multiple focus acquisition |
US20080101534A1 (en) * | 2006-10-19 | 2008-05-01 | Abdelaziz Ikhlef | X-Ray Detector Methods and Apparatus |
US20090116612A1 (en) * | 2006-05-26 | 2009-05-07 | Koninklijke Philips Electronics N. V. | Multi-tube imaging system reconstruction |
US20090185655A1 (en) * | 2004-10-06 | 2009-07-23 | Koninklijke Philips Electronics N.V. | Computed tomography method |
US20100002829A1 (en) * | 2007-04-10 | 2010-01-07 | Ehud Dafni | Cone-beam ct |
US20100020920A1 (en) * | 2006-09-29 | 2010-01-28 | Thomas Mertelmeier | X-ray system and method for tomosynthetic scanning |
US20100020935A1 (en) * | 2007-04-10 | 2010-01-28 | Arineta Ltd. | X-ray tube |
US20100111247A1 (en) * | 2002-01-15 | 2010-05-06 | Bjoern Heismann | Computed tomography device with active adaptation of the measuring electronics |
US20100166138A1 (en) * | 2008-12-26 | 2010-07-01 | Xiongwei Yan | X-ray ct apparatus |
WO2011012940A1 (en) * | 2009-07-28 | 2011-02-03 | Oy Ajat, Ltd | A single sensor multi-functional dental extra oral x-ray imaging system and method |
US20110080992A1 (en) * | 2007-04-10 | 2011-04-07 | Arineta Ltd. | Cone-beam ct |
US20110158380A1 (en) * | 2009-12-24 | 2011-06-30 | Shinsuke Tsukagoshi | X-ray computed tomography apparatus |
US20110176659A1 (en) * | 2010-01-20 | 2011-07-21 | Carey Shawn Rogers | Apparatus for wide coverage computed tomography and method of constructing same |
US20110266453A1 (en) * | 2008-12-05 | 2011-11-03 | Oleg Tischenko | Reconstructing a tomographic image with reduced artifacts |
US20110280363A1 (en) * | 2010-05-12 | 2011-11-17 | Yun Zou | Method of fast current modulation in an x-ray tube and apparatus for implementing same |
CN102648850A (en) * | 2011-02-28 | 2012-08-29 | 上海西门子医疗器械有限公司 | X-ray projection data collecting system |
US20150022394A1 (en) * | 2013-07-16 | 2015-01-22 | Qualcomm Incorporated | Receiver alias rejection improvement by adding an offset |
US20150335306A1 (en) * | 2013-01-04 | 2015-11-26 | The General Hospital Corporation | System and method for ultra-high resolution tomographic imaging |
US20160038166A1 (en) * | 2013-03-14 | 2016-02-11 | Richard Wolf Gmbh | Therapy system |
US9411057B2 (en) | 2011-04-01 | 2016-08-09 | Medtronic Navigation, Inc. | X-ray imaging system and method |
US9418819B2 (en) | 2013-09-06 | 2016-08-16 | Kla-Tencor Corporation | Asymmetrical detector design and methodology |
JP2018011860A (en) * | 2016-07-22 | 2018-01-25 | ゼネラル・エレクトリック・カンパニイ | X-ray CT apparatus and program |
US9977137B2 (en) | 2014-07-28 | 2018-05-22 | Hitachi, Ltd. | X-ray image pickup device and image reconstruction method |
US10219762B2 (en) | 2014-07-18 | 2019-03-05 | Hitachi, Ltd. | X-ray CT device and imaging method for X-ray CT images |
US10902648B2 (en) | 2015-06-26 | 2021-01-26 | Koninklijke Philips N.V. | Robust reconstruction for dark-field and phase contrast CT |
US11259762B2 (en) * | 2015-12-25 | 2022-03-01 | Shanghai United Imaging Healthcare Co., Ltd. | Apparatus, system and method for radiation based imaging |
EP4060615A1 (en) | 2021-03-15 | 2022-09-21 | Koninklijke Philips N.V. | Method for use in ct reconstruction |
EP4198871A1 (en) | 2021-12-20 | 2023-06-21 | Koninklijke Philips N.V. | Processing projection data produced by a computed tomography scanner |
WO2023117447A1 (en) | 2021-12-20 | 2023-06-29 | Koninklijke Philips N.V. | Processing projection data produced by a computed tomography scanner |
EP4266031A1 (en) * | 2022-04-22 | 2023-10-25 | Excillum AB | Secondary emission compensation in x-ray sources |
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DE406067C (en) * | 1923-02-16 | 1924-11-14 | Phoenix Roentgenroehrenfabrike | Incandescent cathode x-ray tube with high vacuum |
US3250916A (en) * | 1963-06-14 | 1966-05-10 | Machlett Lab Inc | Stereo x-ray device |
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US3250916A (en) * | 1963-06-14 | 1966-05-10 | Machlett Lab Inc | Stereo x-ray device |
US3452232A (en) * | 1966-06-30 | 1969-06-24 | Tokyo Shibaura Electric Co | Multiple-cathode x-ray triode tube |
US3819968A (en) * | 1972-06-02 | 1974-06-25 | Siemens Ag | Rotary anode for x-ray tubes |
US4002917A (en) * | 1974-08-28 | 1977-01-11 | Emi Limited | Sources of X-radiation |
US4010370A (en) * | 1974-11-13 | 1977-03-01 | Emi Limited | Computerized tomography apparatus with means to periodically displace radiation source |
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Cited By (122)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4841553A (en) * | 1985-09-30 | 1989-06-20 | Yokogawa Medical Systems, Limited | Method of and apparatus for carrying out tomography |
DE3913302A1 (en) * | 1988-07-20 | 1990-01-25 | Mitsubishi Electric Corp | COMPUTER TOMOGRAPHY SYSTEM |
US4991190A (en) * | 1988-08-15 | 1991-02-05 | Kabushiki Kaisha Toshiba | Rotate-rotate type X-ray computerized tomographic imaging apparatus |
US4894778A (en) * | 1988-09-16 | 1990-01-16 | Yokogawa Medical Systems, Limited | X-ray computerized tomographic device |
GB2242106A (en) * | 1990-03-14 | 1991-09-18 | Hitachi Ltd | Apparatus for computerized tomography |
GB2242106B (en) * | 1990-03-14 | 1994-02-23 | Hitachi Ltd | Apparatus for computerized tomography,method of same,and apparatus for computerized tomography scanning |
US5173852A (en) * | 1990-06-20 | 1992-12-22 | General Electric Company | Computed tomography system with translatable focal spot |
DE4124294A1 (en) * | 1991-07-22 | 1993-01-28 | Siemens Ag | X-RAY TUBES FOR COMPUTER TOMOGRAPHY |
DE4143490C2 (en) * | 1991-07-22 | 1999-04-15 | Siemens Ag | X=ray tube for computer tomography |
US5313510A (en) * | 1991-07-22 | 1994-05-17 | Siemens Aktiengesellschaft | X-ray tube for computer tomography |
EP0543626A1 (en) * | 1991-11-20 | 1993-05-26 | General Electric Company | Deconvolution filter for CT system |
US5361291A (en) * | 1991-11-20 | 1994-11-01 | General Electric Company | Deconvolution filter for CT system |
DE4140631C1 (en) * | 1991-12-10 | 1993-08-05 | Frank Prof. Dr. 4400 Muenster De Natterer | Computer tomograph system - rotates source around circular track around body and swings source so that beam is sent out at different distances to the body centre |
AU685139B2 (en) * | 1992-03-24 | 1998-01-15 | Varian Medical Systems, Inc. | Improved X-ray volumetric CT scanner |
US5335255A (en) * | 1992-03-24 | 1994-08-02 | Seppi Edward J | X-ray scanner with a source emitting plurality of fan beams |
US5265142A (en) * | 1992-05-08 | 1993-11-23 | General Electric Company | Image reconstruction technique for a computer tomography system |
EP0569238A1 (en) * | 1992-05-08 | 1993-11-10 | General Electric Company | Image reconstruction technique for a computed tomography system |
US5493593A (en) * | 1994-09-27 | 1996-02-20 | University Of Delaware | Tilted detector microscopy in computerized tomography |
US5550889A (en) * | 1994-11-28 | 1996-08-27 | General Electric | Alignment of an x-ray tube focal spot using a deflection coil |
US5848117A (en) * | 1996-11-27 | 1998-12-08 | Analogic Corporation | Apparatus and method for computed tomography scanning using halfscan reconstruction with asymmetric detector system |
WO1999005967A1 (en) * | 1997-08-01 | 1999-02-11 | Analogic Corporation | Asymmetric detector halfscan ct reconstruction |
US6384416B1 (en) | 1998-04-27 | 2002-05-07 | Duke University | Transmission scanning technique for gamma-camera coincidence imaging |
US6252935B1 (en) | 1998-07-22 | 2001-06-26 | Siemens Aktiengesellschaft | X-ray radiator with control of the position of the electron beam focal spot on the anode |
DE19851556C2 (en) * | 1998-11-09 | 2000-11-23 | Siemens Ag | CT machine |
US6272199B1 (en) | 1998-11-09 | 2001-08-07 | Siemens Aktiengesellschaft | Computer tomography apparatus |
US20060214108A1 (en) * | 1999-06-06 | 2006-09-28 | Elgems Ltd. | Gamma Camera and CT System |
DE19953613A1 (en) * | 1999-11-08 | 2001-05-17 | Siemens Ag | Computer tomography apparatus |
US6735274B1 (en) | 2000-02-15 | 2004-05-11 | Koninklijke Philips Electronics N.V. | Clinical screening CT systems |
WO2001060258A1 (en) | 2000-02-15 | 2001-08-23 | Philips Medical Systems Technologies Ltd. | Clinical screening ct systems |
WO2002026134A1 (en) | 2000-09-28 | 2002-04-04 | Philips Medical Systems Technologies Ltd. | Ct scanner for time-coherent large coverage |
US20030108146A1 (en) * | 2000-09-28 | 2003-06-12 | Gabriel Malamud | CT scanner for time-coherent large coverage |
US6760399B2 (en) | 2000-09-28 | 2004-07-06 | Koninklijke Philips Electronics N.V. | CT scanner for time-coherent large coverage |
EP1211917A1 (en) * | 2000-12-01 | 2002-06-05 | Marconi Medical Systems, Inc. | Imaging apparatus and method |
US6483890B1 (en) | 2000-12-01 | 2002-11-19 | Koninklijke Philips Electronics, N.V. | Digital x-ray imaging apparatus with a multiple position irradiation source and improved spatial resolution |
US6473487B1 (en) | 2000-12-27 | 2002-10-29 | Rapiscan Security Products, Inc. | Method and apparatus for physical characteristics discrimination of objects using a limited view three dimensional reconstruction |
US6480572B2 (en) | 2001-03-09 | 2002-11-12 | Koninklijke Philips Electronics N.V. | Dual filament, electrostatically controlled focal spot for x-ray tubes |
US20030123604A1 (en) * | 2001-12-28 | 2003-07-03 | Edic Peter Michael | Methods and apparatus for computed tomography imaging |
US6901131B2 (en) * | 2001-12-28 | 2005-05-31 | General Electric Company | Methods and apparatus for computed tomography imaging |
US20100111247A1 (en) * | 2002-01-15 | 2010-05-06 | Bjoern Heismann | Computed tomography device with active adaptation of the measuring electronics |
US8005183B2 (en) * | 2002-01-15 | 2011-08-23 | Siemens Aktiengesellschaft | Computed tomography device with active adaptation of the measuring electronics |
WO2003094115A1 (en) | 2002-05-06 | 2003-11-13 | Koninklijke Philips Electronics N.V. | High resolution ct scanner |
US6895079B2 (en) | 2002-08-20 | 2005-05-17 | General Electric Company | Multiple focal spot X-ray inspection system |
US20040037393A1 (en) * | 2002-08-20 | 2004-02-26 | General Electric Company | Multiple focal spot X-ray inspection system |
CN1325023C (en) * | 2003-07-24 | 2007-07-11 | 株式会社东芝 | X-ray ct apparatus and backprojection computing method for x-ray ct |
US7583778B2 (en) | 2003-07-24 | 2009-09-01 | Kabushiki Kaisha Toshiba | X-ray CT apparatus and X-ray CT backprojection operating method |
US20050058239A1 (en) * | 2003-07-24 | 2005-03-17 | Kabushiki Kaisha Toshiba | X-ray CT apparatus and X-ray CT backprojection operating method |
EP1501052A1 (en) * | 2003-07-24 | 2005-01-26 | Kabushiki Kaisha Toshiba | Backprojection reconstruction method for CT with a displaced center-of-rotation |
US20050100132A1 (en) * | 2003-11-07 | 2005-05-12 | Block Wayne F. | Multiple target anode assembly and system of operation |
US7065179B2 (en) * | 2003-11-07 | 2006-06-20 | General Electric Company | Multiple target anode assembly and system of operation |
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